| 摘要 |
<p>PURPOSE:To regulate power by a phase control by using a 3-leg core transformer, and utilizing its characteristics, thereby eliminating the possibility of electric shock, and eliminating another power source. CONSTITUTION:A series circuit of a load 12 and a triac 13 is connected with a power source 14, one end of the primary coil 6 of a three-leg core transformer 1 is connected with the power source side of the load 12, and the other end is connected through a resistor 15 with the terminal T1 of a triac 17. A phase controller A and an ON/OFF switch 21 are provided at the secondary side of the three- leg core transformer 1, the output of a tertiary coil 8 electromagnetically coupled with the secondary coil 7 is supplied to between the terminal T1 of the triac 13 and a gate G, and power to the load 12 is controlled by the phase control of the secondary side phase controller A.</p> |
